Bypass cap's

[jhaible]

> I've always had good luck with 78xx and 79xx parts, but those little
78Lxx
> and 79Lxx things have given me noise and stability problems on occasion.

Hmm, yes, it may have been the "L" types which I have used.
They work normally worked fine, too. Only with the 18V pre-regulation I ran
into problems.

JH. 

> 
> -Art
> 
> -----Original Message-----
> From: Edu Silva <edusilva at bahianet.com.br>
> To: jhaible at metronet.de <jhaible at metronet.de>; DIY
> <synth-diy at mailhost.bpa.nl>
> Date: Sunday, December 27, 1998 5:36 PM
> Subject: Re: Bypass cap's
> 
> 
> >Juergen wrote:
> >
> >> I had a lot of problems with 7815 / 7915 on board regulators, and 7818
/
> >> 7918
> >> pre-stabilized PSU. Don't ask me why, but they failed all the time.
(no
> >> destruction,
> >> but latching up in protection mode). I switched to RC4195's and all
was
> >> fine.
> >>
> >> JH.
> >
> >You know, some devices, like the 555, have the annoyng habit of inducing
> >little glitches in supply lines, when changing states. The 78/79
> >regulators, sensible as they are, may be interpreting this as a short,
and
> >bravely saving your beloved gear...
> >
> >Just a thought...
> >
> >Edu
> >
> >_____________________
> >Edu Silva - ES2 Audio
> >Salvador-Bahia-Brazil
> >
> 
>